Abstract: In a method of inspecting a conduit fitting installed on a conduit end, the conduit fitting comprising a fitting body defining a central bore receiving the conduit end, a transducer is provided secured to a wall portion of the conduit end. The transducer is operated to apply a plurality of ultrasonic signals against an outer surface of the conduit end wall portion at a plurality of axial locations spaced apart from the central bore by a plurality of different distances, such that the plurality of ultrasonic signals are guided axially along the conduit end into the central bore of the conduit fitting and reflected axially back to the transducer. The reflected plurality of ultrasonic signals are evaluated to identify a condition of at least one of the conduit fitting and the conduit end.

Abstract: A spring return cartridge for a rotary actuated valve includes a torsion spring having a spring-loaded intermediate portion extending between first and second end portions and a spring carrier sleeved with the torsion spring. The spring carrier includes a first portion rotationally fixed with the first end portion of the torsion spring, and a second portion rotatably coupled with the second end portion of the torsion spring, such that the second end portion of the torsion spring is rotatable with respect to the spring carrier, and with respect to the first end portion of the torsion spring, between first and second rotational limit positions, with the intermediate portion of the torsion spring biasing the torsion spring second end portion to the first rotational limit position and maintaining a spring-loaded condition in the first rotational limit position.